If you have a bad smell pattern, ala: something that needs to be refactored. Add it here, like ObjCDesignPatterns.
Some AntiPatterns/bad smells that have yet to be described:
The original source for the whole ‘bad smells’ idea is Kent Beck and Martin Fowler. A copy of their article can be found here:
http://home.sprintmail.com/~wconrad/refactoring-live/smells.html <– This link is broken